<div class="wi-popup wi-popupbutton"
     is-open="isopen">
    <div class="wi-popup-menu wi-popupbutton-menu" ng-transclude></div>
    <input class="wi-btn wi-popupbutton-content" type="button" value="{{label}}"/>
    <button class="wi-btn wi-popupbutton-arrow"><span class="fa fa-chevron-down"></span></button>
</div>